of wrestling outloud with making these choices. knowing what we know does philadelphia,doesboston, doesnew york have to use a changed municipal math to run its daily affairs because of threats of these kinds of things? joe romm? >> well, i think as governor cuomo said, it's a new normal but we have old infrastructure. i think if f you listen to client scientists -- if we had listened to climate scientists who worned, no could flood like this, that storm surges were going to increase as the sea levels rose because ofgob waming and because of more intense storms we might have prevented it. now i think we need to listen to climate scientists who are warning that sea levels could rise, two feet-- as you heard-- by the middle of the century but three, four, five and six feet by the end of the century. so our choices are twofold. we should reduce greenhouse gas emissions so we're on the low end of future warming estimates and secondly we've got to start preparing for the storms that we are stuck with, like hurricane sandy. >> suarez: he used the word "prudence. whats prudent at ts point? >> that